Tire lock



Se t. 27 1 1643 435 p 927 R. H. BUTTERS ET AL TIRE Loox l iled July 22,1924 2 Sheets-Sheet l Sept. 27, 1927. 1,643,485

R. H. BUTTERS ET AL TIRE LOCK Filed July 22, 1924 2 Sheets-Sheet 2Patented sept. 27, i927.

eres

PATENT FFMIE.

RBRT-H. BUTTERS ANI) RICHARD W. STARKE, OF ATLANTA, GEORGIA, ASSIGNORS TBUTTERS MANUFACTURING COMPANY, OF ATLANTA, GEORGIA, A CORPORA- TION 0FGEDRGLA..

TIRE LUCK.

Application mcd July 22,

This invention relates to improvements 1n automobile tire locks andproposes a device,

for cooperation as a clamp element with a companion clamp element ofwhich the tire carrier forms a part, the co-operating clamp elementsengaging the rim upon which the tire is mounted. l

Heretofore such eo-operatmg rim en aging cla-mp elements have beenconnecte by a simple bolt and nut fastening which affords virtually noprotection against the theft of a"tire. As a measure of precaution theco operating clamp elements have sometimes been additionally secured bya pad-lock, the

bail or shackle of which has been passed .through alining openings orthrough an opening in the bolt element ofthe connecting fastening forthe clamp elements, but

while the provision of a pad-lock has 1ncreased the labor attending thetheft of a tire it has not been effective as a measureof protectionbecause of the relative ease With which thebail or shackle of thepad-lock can be cut or sawed or twisted from the body of the lock. y i.

The principal objects of the present invention are to overcome the abovenoted oblec.- tion to the use of co-operating rim engaging clampelements employed to secure a spare tire to its carrier, to provide forthis purpose a clamp element with which is,1ncor porated in unitaryfashion one of the elements of the securing nut and bolt connection anda locking' means for such securing element, and to secure the advantagesof simplicity and economy of construction and facility of use. i

The invention consists generally of various novel features of structureand combination characterizing the removable rim engaging clamp Velementand the relation of such element to the companion stationary elementwith which it co-operates.

In the accompanying drawings:

Figure 1 is an elevation showing the relation of the improved tirelockto a spare tire and the tire carrier, the View being taken at the rearof the automobile.

Figure 2 is an elevation of the same, the

tomobile and the spare tire and its carrier being shown in section.

Figure 3 is an elevation of the tire lock perse.

view being taken from Vthe side of the au` 1924. semi no. 727,469.

Figure 4 is a central longitudinal section of the same in co-operatingrelation with the stationary rim engaging clamping element.

Figures 5 and 6 are vertical sectional views on the lines 55 and 6--6,respectively.

Figure 7 is a detail side elevation of one of the co-operating securingelements incorporated with the removable clamping elements.

Figure 8 is an end view of the same.

Figure 9 is an elevation of the stationary clamping element.

Figure 10 is a sectional view onthe same plane as Figure 5, but showinga modilied construction.

Fioure 11 is a side elevation of the securing element incorporated inthe modified coustruction.

Figure 12 is an end elevation thereof.

Referring to Figures 1 to 9:

Figure l shows the spare tire T and its rim R 4fitted upon an annulartire carrier C. The inner edge, of the'tire carrier is outturned as at calong across sectional curve which conforms to the flange of the rim7the out-turned portion c serving as a flange or shoulder' to limit theinward .movement of the rim relatively to the tire carrier. A lug Aprojects radially inward Yfrom the tire carrier and is suitably fixedthereto. The lug A and tire carrier C constitute a stationary clampingelement for co-operation in securing the spare tire with a removable rimengagging clamping element which is fastened to the stationary elementby a nut and bolt connection. According to the present invention theremovable clamping element, indi cated generally at l, has incorporatedwith it one of the elements of the securing con` neftion and a lock forsuch securing element. The clampingr element l consists ot a bod 2 whichis held against the lug and Whic at its outer end and at the inner sidethereof is formed with a recess 3 curved in conforn1- ity to the `flangeof the rim and engaging the rim at the side opposite to that enga ed bythe flange c of the tire carrier. The olt of the securing connection isshown at 4 and the co-operating nut is shown at 5. In the constructionpreferred the bolt 4 is carried by the lug A and the nut 5 is 'carriedby the body 2. The bolt 4 is secured to the lug A by a pin 6 orotherwise suitably and projects rearward from said lug, using the term yrearward to indicate the direction from tits rotatably'in an,opening 8extending between the transverse faces of the block 2, using the termtransverse to indicate a direction at 'right angles to vthe direct-ionof the axis of the bolt 4. The nut is held against axial displacementrelatively to the body 2 by a transverse pin 9 fitted in the body 2 andengaging as a ley in an annular'groove 10 formed in the extension 7.

The nut 5 is threaded upon the bolt 4 so as to draw the. block 2 againstthe lug A and is held against rotation by a lock bolt 11, the inner endof which is lengageable with any one of a series of recesses 12 providedalong the circumference of the extension 7, the recesses 12 beingpreferably Ain the form Vof longitudinal grooves. The lock bolt 1l isfitted slidably vman. opening in the block 2 and is preferablyniovablealong an airis which forms a prolongation of a radius of the extension.7, whereby/its inner end may ,'v be projected into the opening 8 :torengage- 'ment in any one of the recesses 1.2 or may be withdrawn fromsaid opening. yThe bolt 11, which 'is preferably arranged above the eX-tension 7,A is projected by a spring 13 which engages said bolt at its-upper end and re, acts' against the wall at the upper end of theopenngin which the bolt 11 is mounted, such yWall being preferablyconstituted by a permanently secured plug 1 4.

"Suitable lock mechanisni is provided for controlling the position ofthe bolt 411. `This mechanism is--preferably of the typefwhich includesa series of radially arranged and 'movable spring pressed' pinsoperative to .Connect ordisconnect a stationary cylindrical shell .and arotatable barrel enclosed.

, therein, p'aracentric'key beiner employed to move the pins into theshell and turn the barrel.;A The lock mechanism is fitted in an opening15 which extends between the Abolt 1l and the rear face of the block 2and is Suliciently indicated by theshowing of the i stationarycylindrical shell 16 and the enclosed rotatable barrel 17.

[The shell 16 is fixed against turnin' f and .aiiialfmovement as'by atransverse pin 18 .fitted in the block 2 and engagingin a transversegroove formed intlie under face of the. shell-16. The barrel 17 isturned by the-key 19 Aandds provided at its inner end ,-With'iaprojecting. eccentric pin 20 which' works ni a recess 2l 'formed in thebolt 11 and engages the upper wall of `said recess as a shoulder intheoperation of retracting the bolt. The turning -niovemeiit of thebarrel is limited to a halt-revolution as by diametriczilly oppositeshoulders 22 provided at 'the inner end oi' the Vbarrelfoil engagement.with a lug 23 projecting from' the shell i6.

ln use, thee-pare tiro-isl lifted-on the tire yclaim notaires carrier inthe usual manner and the removable clamping element is then secured tothe stationary clamping element A, this being the body 2 against theclamping element Aj and cause the shoulder providedby the recess 3 toengage the .adjacent flange of the rim. When the nut 5 has been turnedto the extent permissible and the engagement' ot' the block 2 with thetire carrier has been thereby' fully established the barrel 17- isturned by the key 19 so as to permit the projection of the bolt 11 bythe spring 13, the inner end of the bolt atA such time engaging in theadjacent groove 12 and holding the nut 5 against turning movement. Thebody 2 as drawn by the nut 5 to operative Osition against the lug Aisvpositively/lheld against turning movement upon the bolt 4. This maybe accomplished in different ways but preferably, and as shown, the body2 is provided at the upper side of theclearance 3 with a transverseprojecting lug 24 which bears upon the inner.circumferential face of therim and has its ends on a` radius taken from the axial center of thebolt Ll'sulficiently long to develop an arc which will cut the arc oftherim subtended by'said lug. lin removing the spare tire the operationsabove described are reversed, that is to say by the key 19 the barrel 17is turned in the direction required to retract the bolt 11. When saidbolt has been retracted thenut 5 is backed oil'v from the bolt 4 and theblock 2 thereby removed.

Referring to Figures 10 to 12:

rlhis construction dilersA from the construction above described only inthat the locking bolt, hereadesignated '11, vand the recesses, heredesignated 12a, in the extension 'fitting -the reinovalivle clampingelement` to the lu A, the locking bolt is not. required to be eld.retracted but rides over the inclined faces of the recesses 412a andlhy,en gagcment Withthe abrupt-faces of 'said recesses prevents backwardturning movement of the nut 5.

Having fully described our invention,- Wel l. In .espa-re tirelocktheconibinationv with a rim engaging `tire carrier and a lug mountedthereon, said tirecarrier and lug constituting a stationary. clampelement, of a removable cgi-operating clamp element comprising a rimengaging body, a part carriedl by and rotatableielatively to said izo

